package com.peanut.bosskg.util;

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import java.io.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

/**
 * @Description:发送http请求类
 * @author:admin
 * @time:2018年7月17日 下午3:25:32
 */
public class HttpClientHelper {
    /**
     * @Description:使用HttpClient发送post请求
     * @author:liuyc
     * @time:2016年5月17日 下午3:28:23
     */
    public static String httpClientPost(String urlParam, Map<String, Object> params, String charset) {
        StringBuffer resultBuffer = null;
        HttpClient client = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(urlParam);
        // 构建请求参数
        List<NameValuePair> list = new ArrayList();
        Iterator<Entry<String, Object>> iterator = params.entrySet().iterator();
        while (iterator.hasNext()) {
            Entry<String, Object> elem = iterator.next();
            list.add(new BasicNameValuePair(elem.getKey(), String.valueOf(elem.getValue())));
        }
        BufferedReader br = null;
        try {
            if (list.size() > 0) {
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, charset);
                httpPost.setEntity(entity);
            }
            HttpResponse response = client.execute(httpPost);
            // 读取服务器响应数据
            resultBuffer = new StringBuffer();
            br = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), charset));
            String temp;
            while ((temp = br.readLine()) != null) {
                resultBuffer.append(temp);
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                    br = null;
                    throw new RuntimeException(e);
                }
            }
        }
        return resultBuffer.toString();
    }

    public static String httpClientFile(String urlParam, Map<String, Object> params, String charset, String fileName) {
        HttpClient client = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(urlParam);
        // 构建请求参数
        List<NameValuePair> list = new ArrayList<NameValuePair>();
        Iterator<Entry<String, Object>> iterator = params.entrySet().iterator();
        while (iterator.hasNext()) {
            Entry<String, Object> elem = iterator.next();
            list.add(new BasicNameValuePair(elem.getKey(), String.valueOf(elem.getValue())));
        }
//		BufferedReader br = null;
        InputStream br = null;
        FileOutputStream out = null;
        try {
            if (list.size() > 0) {
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, charset);
                httpPost.setEntity(entity);
            }
            HttpResponse response = client.execute(httpPost);

            int code = response.getStatusLine().getStatusCode();
            System.out.println(code);
            if (code == HttpStatus.SC_OK) {
                File file = new File(fileName);
                out = new FileOutputStream(file);
                br = response.getEntity().getContent();
                byte[] buffer = new byte[4096];
                int readLength = 0;
                while ((readLength = br.read(buffer, 0, 1024)) != -1) {
                    out.write(buffer, 0, readLength);
                }
                out.flush();
            } else {
                return "false";
            }

        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                    br = null;
                    throw new RuntimeException(e);
                }
                try {
                    if (out != null) {
                        out.close();
                    }
                } catch (IOException e) {
//				logger.error("下载文件失败！");
                }
            }
        }
        return "success";
    }

    /**
     * @Description:读取一行数据，contentLe内容长度为0时，读取响应头信息，不为0时读正文
     * @time:2016年5月17日 下午6:11:07
     */
    private static String readLine(InputStream is, int contentLength, String charset) throws IOException {
        List<Byte> lineByte = new ArrayList<Byte>();
        byte tempByte;
        int cumsum = 0;
        if (contentLength != 0) {
            do {
                tempByte = (byte) is.read();
                lineByte.add(Byte.valueOf(tempByte));
                cumsum++;
            } while (cumsum < contentLength);// cumsum等于contentLength表示已读完
        } else {
            do {
                tempByte = (byte) is.read();
                lineByte.add(Byte.valueOf(tempByte));
            } while (tempByte != 10);// 换行符的ascii码值为10
        }

        byte[] resutlBytes = new byte[lineByte.size()];
        for (int i = 0; i < lineByte.size(); i++) {
            resutlBytes[i] = (lineByte.get(i)).byteValue();
        }
        return new String(resutlBytes, charset);
    }


    /**
     * 下载文件
     * @param url
     * @param destFileName
     * @return
     * @throws Exception
     */
	/*public boolean getFile(String url,String destFileName) throws Exception{


		RequestConfig requestConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.STANDARD_STRICT).
				setExpectContinueEnabled(true).setTargetPreferredAuthSchemes(Arrays.asList(AuthSchemes.NTLM,AuthSchemes.DIGEST)).
				setProxyPreferredAuthSchemes(Arrays.asList(AuthSchemes.BASIC)).setConnectionRequestTimeout(30000)
				.setConnectTimeout(30000).build();;
		CloseableHttpClient client = HttpClients.custom().setConnectionManager(cm)
				.setDefaultRequestConfig(requestConfig).build();
				InputStream in =null;
		FileOutputStream out = null;
		try {
			HttpGet httpGet = new HttpGet(url);
			CloseableHttpResponse response = client.execute(httpGet);
			HttpEntity entity = response.getEntity();

			in = entity.getContent();
			if(in == null){
//				logger.info("文件不存在");
				return false;
			}
			File file = new File(destFileName);
			out = new FileOutputStream(file);
			byte[] buffer = new byte[4096];
			int readLength = 0;
			while((readLength=in.read(buffer)) > 0){
				byte[] bytes = new byte[readLength];
				System.arraycopy(buffer, 0, bytes, 0, readLength);
				out.write(bytes);
			}
			out.flush();
//			logger.info("下载文件成功：{}",destFileName);
			return true;
		} catch (Exception e) {
//			logger.error("下载文件失败！");
			return false;
		}finally {
			try {
				if(in != null){
					in.close();
				}
			} catch (IOException e) {
//				logger.error("下载文件失败！");
			}

			try {
				if(out != null){
					out.close();
				}
			} catch (IOException e) {
//				logger.error("下载文件失败！");
			}
		}
	}*/

}
